/**
 * 学生答题情况记录表、
 * 表名：student_questions
 */
const student_questions = {

    _id: "id（系统字段）"

    , "question": "题目（题干）"
    , "question_id": "题目id，关联 question_banks 表"
    , "user_id": "用户id，关联users表的id"
    , "student_id": "学生id，关联students表的id"
    , "answer": "当前选择的答案"
    , "answer_id": "当前选择的答案id,关联 answers 表"
    , "is_correct": "是否回答正确，Boolean 类型"
    , "gold_coin": "金币数量"
    , "get_gold_coin": "获得的金币数量"

}